Minnesota Mandatory Electronic Medical Reporting

Minnesota law requires medical providers submit bills electronically through a clearinghouse.

Grinnell Mutual Reinsurance Company and Grinnell Select Insurance Company use CorVel as their clearinghouse for electronic submissions of claims.

Provider inquiries should be sent to CorVel at:
Email: STMN_Clearinghouse@CorVel.com
Fax: 866-450-9388

Phone: 612-436-2520 or 877-703-4240.
Grinnell Mutual Reinsurance Company Payer ID: 14117
Grinnell Select Payer ID: 16144

The claim # goes in box 60 on the UB and box 1A on the HCFA

CorVel Bill Review Customer Service - Questions on actual bill review services/reductions:

Phone: 612-436-2428

E-mail: mn_billreview@corvel.com

Grinnell Mutual Reinsurance Company Workers' Compensation Fax: 866-222-0283
Faxed records require the transaction ID.

Grinnell Mutual Reinsurance can be contacted for the claim # at:
Customer Care Line 877-649-0823

Frequently asked claims questions How to report a claim